Anyone else noticing thread pages momentarily blanking?

[edgeless]

This just started happening within the past week or so. And it only happens if the Facebook Like button is enabled for threads. What happens is a thread page will load normally until just before the FB Like button appears. Then right when the Like button is about to appear, all of the posts vanish from the page (for 1 to 1.5 seconds or so) and then reappear with the Like button in place at the top. Disabling the FB like button for threads makes the thread pages load cleanly as they used to do before this started happening.

I've had the FB Like button enabled for threads for years and it has never behaved this way upon page loads. I'm just wondering if anyone else has noticed this behavior on vB4? I'm guessing said behavior is a result of some change Facebook has recently made.